I'm sorry, but a standalone AP cannot bridge to other manufacturer equipment, as Ruckus uses a 4-mac WDS method.You might find our previous CPE device like mf7211 on eBay. That has a single Eth port, and can connect to a WLANadvertised in 5G band, like a WPA2-PSK SSID, meant to provide wireless access to non-wifi devices/PCs.

Otherwise it would take 2 x 7343 and a ZD to mesh from the shed to your ISP wifi modem, a more pricey solution.